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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2106768.pdf | 1.54 MB | Shaun Ewing | Feb 01, 1938 00:00 |
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US-2106768-A // Filter system for high frequency electric waves // Southworth George C. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.54 MB | Shaun Ewing | Feb 01, 1938 00:00 | US-2106768-A // Filter system for high frequency electric waves // Southworth George C. // American Telephone & Telegraph | ||||
| PDF File 1944269.pdf | 1.51 MB | Shaun Ewing | Jan 23, 1934 00:00 |
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US-1944269-A // Telephone system // Raynsford Arthur ; Haines William T. // Beil Telephone Lab Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Jan 23, 1934 00:00 | US-1944269-A // Telephone system // Raynsford Arthur ; Haines William T. // Beil Telephone Lab Inc ; American Telephone & Telegraph | ||||
| PDF File 2198517.pdf | 1.50 MB | Shaun Ewing | Apr 23, 1940 00:00 |
|
US-2198517-A // Printing telegraph private branch exchange system // Singer Fred John // American Telephone & Telegraph | |||
| Version 1 (current) | 1.50 MB | Shaun Ewing | Apr 23, 1940 00:00 | US-2198517-A // Printing telegraph private branch exchange system // Singer Fred John // American Telephone & Telegraph | ||||
| PDF File 2030178.pdf | 1.50 MB | Shaun Ewing | Feb 11, 1936 00:00 |
|
US-2030178-A // Electrical circuit arrangement // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.50 MB | Shaun Ewing | Feb 11, 1936 00:00 | US-2030178-A // Electrical circuit arrangement // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1823948.pdf | 1.47 MB | Shaun Ewing | Sept 22, 1931 00:00 |
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US-1823948-A // Radio telephone and telegraph system // Mccann Thomas A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Sept 22, 1931 00:00 | US-1823948-A // Radio telephone and telegraph system // Mccann Thomas A. // American Telephone & Telegraph | ||||
| PDF File 2085637.pdf | 1.47 MB | Shaun Ewing | Jun 29, 1937 00:00 |
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US-2085637-A // Teletypewriter exchange system // Collins Clarence V. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.47 MB | Shaun Ewing | Jun 29, 1937 00:00 | US-2085637-A // Teletypewriter exchange system // Collins Clarence V. // American Telephone & Telegraph | ||||
| PDF File 1874664.pdf | 1.46 MB | Shaun Ewing | Aug 30, 1932 00:00 |
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US-1874664-A // Multiplex telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Aug 30, 1932 00:00 | US-1874664-A // Multiplex telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1887172.pdf | 1.46 MB | Shaun Ewing | Nov 08, 1932 00:00 |
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US-1887172-A // Combined earth boring machine and derrick apparatus // Smith Temple Clifford ; Spowart John Beveridge // American Telephone & Telegraph | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Nov 08, 1932 00:00 | US-1887172-A // Combined earth boring machine and derrick apparatus // Smith Temple Clifford ; Spowart John Beveridge // American Telephone & Telegraph | ||||
| PDF File 2153728.pdf | 1.41 MB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2153728-A // Ultra high frequency signaling // Southworth George Clark // American Telephone & Telegraph | |||
| Version 1 (current) | 1.41 MB | Shaun Ewing | Apr 11, 1939 00:00 | US-2153728-A // Ultra high frequency signaling // Southworth George Clark // American Telephone & Telegraph | ||||
| PDF File 1843228.pdf | 1.40 MB | Shaun Ewing | Feb 02, 1932 00:00 |
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US-1843228-A // Radio telephone and telegraph circuits // Herman Joseph ; Taylor Edmund R. ; Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.40 MB | Shaun Ewing | Feb 02, 1932 00:00 | US-1843228-A // Radio telephone and telegraph circuits // Herman Joseph ; Taylor Edmund R. ; Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1843227.pdf | 1.40 MB | Shaun Ewing | Feb 02, 1932 00:00 |
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US-1843227-A // Radio telephone and telegraph system // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 1.40 MB | Shaun Ewing | Feb 02, 1932 00:00 | US-1843227-A // Radio telephone and telegraph system // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1927999.pdf | 1.38 MB | Shaun Ewing | Sept 26, 1933 00:00 |
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US-1927999-A // Volume control in telephone circuits // Wright Sumner B. ; Taylor Edmund R. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | Sept 26, 1933 00:00 | US-1927999-A // Volume control in telephone circuits // Wright Sumner B. ; Taylor Edmund R. // American Telephone & Telegraph | ||||
| PDF File 2124599.pdf | 1.38 MB | Shaun Ewing | Jul 26, 1938 00:00 |
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US-2124599-A // Electrical network system // Wiener Norbert ; Lee Yuk-Wing // American Telephone & Telegraph | |||
| Version 1 (current) | 1.38 MB | Shaun Ewing | Jul 26, 1938 00:00 | US-2124599-A // Electrical network system // Wiener Norbert ; Lee Yuk-Wing // American Telephone & Telegraph | ||||
| PDF File 2134076.pdf | 1.37 MB | Shaun Ewing | Oct 25, 1938 00:00 |
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US-2134076-A // Teletypewriter system // Duncan James Archibald // American Telephone & Telegraph | |||
| Version 1 (current) | 1.37 MB | Shaun Ewing | Oct 25, 1938 00:00 | US-2134076-A // Teletypewriter system // Duncan James Archibald // American Telephone & Telegraph | ||||
| PDF File 2088702.pdf | 1.35 MB | Shaun Ewing | Aug 03, 1937 00:00 |
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US-2088702-A // Transmission measuring apparatus // Hoppesch John W. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Aug 03, 1937 00:00 | US-2088702-A // Transmission measuring apparatus // Hoppesch John W. // American Telephone & Telegraph | ||||
| PDF File 2034036.pdf | 1.35 MB | Shaun Ewing | Mar 17, 1936 00:00 |
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US-2034036-A // Circuits with hexagonal shields // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Mar 17, 1936 00:00 | US-2034036-A // Circuits with hexagonal shields // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 2207314.pdf | 1.35 MB | Shaun Ewing | Jul 09, 1940 00:00 |
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US-2207314-A // Communication system // Cunningham Harold Jerome ; Groome Preston Edmund ; Hanley Frank Harold ; Richards Kenneth Watson // American Telephone & Telegraph | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Jul 09, 1940 00:00 | US-2207314-A // Communication system // Cunningham Harold Jerome ; Groome Preston Edmund ; Hanley Frank Harold ; Richards Kenneth Watson // American Telephone & Telegraph | ||||
| PDF File 1905359.pdf | 1.35 MB | Shaun Ewing | Apr 25, 1933 00:00 |
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US-1905359-A // Channel selection // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Apr 25, 1933 00:00 | US-1905359-A // Channel selection // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 2034032.pdf | 1.35 MB | Shaun Ewing | Mar 17, 1936 00:00 |
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US-2034032-A // Shielded pair of wires // Green Estill I. ; Curtis Harold E. ; Mead Sallie P. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Mar 17, 1936 00:00 | US-2034032-A // Shielded pair of wires // Green Estill I. ; Curtis Harold E. ; Mead Sallie P. // American Telephone & Telegraph | ||||
| PDF File 2034035.pdf | 1.34 MB | Shaun Ewing | Mar 17, 1936 00:00 |
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US-2034035-A // Circuits with double circular shields // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.34 MB | Shaun Ewing | Mar 17, 1936 00:00 | US-2034035-A // Circuits with double circular shields // Green Estill I. // American Telephone & Telegraph |
